Home / 1,031.35-1,422.95-632.60

Finding the Fourth Proportional to 1,031.35, 1,422.95 and 632.60

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Solution

The fourth proportional to 1,031.35, 1,422.95 and 632.60 is: 872.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,031.35 : 1,422.95 = 632.60 : x
  2. Step 2: Convert to fraction form
    1,031.35/1,422.95 = 632.60/x
  3. Step 3: Cross multiply
    1,031.35x = 1,422.95 × 632.60
  4. Step 4: Simplify right side
    1,031.35x = 900,151.45
  5. Step 5: Solve for x
    x = 900,151.45/1,031.35
  6. Step 6: Final answer
    x = 872.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.